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authorLuca Ceresoli <luca.ceresoli@comelit.it>2011-05-11 03:59:54 +0000
committerWolfgang Denk <wd@denx.de>2011-05-12 21:49:49 +0200
commit3e38e429fff1ba6a0947a2f547f9ebeeef6ff3b1 (patch)
tree919ebaa521a13c947694c89a31e947c3a4c2c5a7 /net
parenta7fd0d9ffd32d99255d18aadc88a5ccfb1b09986 (diff)
downloadblackbird-obmc-uboot-3e38e429fff1ba6a0947a2f547f9ebeeef6ff3b1.tar.gz
blackbird-obmc-uboot-3e38e429fff1ba6a0947a2f547f9ebeeef6ff3b1.zip
net/net.c: cosmetic: fix lines over 80 characters
This removes the following checkpatch warning: - WARNING: line over 80 characters There are three such warnings left. The first is hard to fix with cosmetic-only changes without compromising code readability, so I'm leaving it as it is for now: WARNING: line over 80 characters #1537: FILE: net.c:1537: + [4 tabs] memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, ... The other two cannot be fixed without splitting string literals, so it is preferred to keep them longer than 80 characters. Signed-off-by: Luca Ceresoli <luca.ceresoli@comelit.it> Cc: Wolfgang Denk <wd@denx.de> Cc: Ben Warren <biggerbadderben@gmail.com> Cc: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'net')
-rw-r--r--net/net.c232
1 files changed, 155 insertions, 77 deletions
diff --git a/net/net.c b/net/net.c
index 9566356b2a..83e20f9d3e 100644
--- a/net/net.c
+++ b/net/net.c
@@ -101,7 +101,8 @@
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_ARP_TIMEOUT
-# define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
+/* Milliseconds before trying ARP again */
+# define ARP_TIMEOUT 5000UL
#else
# define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
#endif
@@ -115,16 +116,24 @@ DECLARE_GLOBAL_DATA_PTR;
/** BOOTP EXTENTIONS **/
-IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
-IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
-IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
+/* Our subnet mask (0=unknown) */
+IPaddr_t NetOurSubnetMask=0;
+/* Our gateways IP address */
+IPaddr_t NetOurGatewayIP=0;
+/* Our DNS IP address */
+IPaddr_t NetOurDNSIP=0;
#if defined(CONFIG_BOOTP_DNS2)
-IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
-#endif
-char NetOurNISDomain[32]={0,}; /* Our NIS domain */
-char NetOurHostName[32]={0,}; /* Our hostname */
-char NetOurRootPath[64]={0,}; /* Our bootpath */
-ushort NetBootFileSize=0; /* Our bootfile size in blocks */
+/* Our 2nd DNS IP address */
+IPaddr_t NetOurDNS2IP=0;
+#endif
+/* Our NIS domain */
+char NetOurNISDomain[32]={0,};
+/* Our hostname */
+char NetOurHostName[32]={0,};
+/* Our bootpath */
+char NetOurRootPath[64]={0,};
+/* Our bootfile size in blocks */
+ushort NetBootFileSize=0;
#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
IPaddr_t Mcast_addr;
@@ -132,16 +141,25 @@ IPaddr_t Mcast_addr;
/** END OF BOOTP EXTENTIONS **/
-ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */
-uchar NetOurEther[6]; /* Our ethernet address */
-uchar NetServerEther[6] = /* Boot server enet address */
+/* The actual transferred size of the bootfile (in bytes) */
+ulong NetBootFileXferSize;
+/* Our ethernet address */
+uchar NetOurEther[6];
+/* Boot server enet address */
+uchar NetServerEther[6] =
{ 0, 0, 0, 0, 0, 0 };
-IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
-IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
-volatile uchar *NetRxPacket; /* Current receive packet */
-int NetRxPacketLen; /* Current rx packet length */
-unsigned NetIPID; /* IP packet ID */
-uchar NetBcastAddr[6] = /* Ethernet bcast address */
+/* Our IP addr (0 = unknown) */
+IPaddr_t NetOurIP;
+/* Server IP addr (0 = unknown) */
+IPaddr_t NetServerIP;
+/* Current receive packet */
+volatile uchar *NetRxPacket;
+/* Current rx packet length */
+int NetRxPacketLen;
+/* IP packet ID */
+unsigned NetIPID;
+/* Ethernet bcast address */
+uchar NetBcastAddr[6] =
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
uchar NetEtherNullAddr[6] =
{ 0, 0, 0, 0, 0, 0 };
@@ -149,24 +167,33 @@ uchar NetEtherNullAddr[6] =
void (*push_packet)(volatile void *, int len) = 0;
#endif
#if defined(CONFIG_CMD_CDP)
-uchar NetCDPAddr[6] = /* Ethernet bcast address */
+/* Ethernet bcast address */
+uchar NetCDPAddr[6] =
{ 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
#endif
-int NetState; /* Network loop state */
+/* Network loop state */
+int NetState;
#ifdef CONFIG_NET_MULTI
-int NetRestartWrap = 0; /* Tried all network devices */
-static int NetRestarted = 0; /* Network loop restarted */
-static int NetDevExists = 0; /* At least one device configured */
+/* Tried all network devices */
+int NetRestartWrap = 0;
+/* Network loop restarted */
+static int NetRestarted = 0;
+/* At least one device configured */
+static int NetDevExists = 0;
#endif
/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
-ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */
-ushort NetOurNativeVLAN = 0xFFFF; /* ditto */
+/* default is without VLAN */
+ushort NetOurVLAN = 0xFFFF;
+/* ditto */
+ushort NetOurNativeVLAN = 0xFFFF;
-char BootFile[128]; /* Boot File name */
+/* Boot File name */
+char BootFile[128];
#if defined(CONFIG_CMD_PING)
-IPaddr_t NetPingIP; /* the ip address to ping */
+/* the ip address to ping */
+IPaddr_t NetPingIP;
static void PingStart(void);
#endif
@@ -176,8 +203,10 @@ static void CDPStart(void);
#endif
#if defined(CONFIG_CMD_SNTP)
-IPaddr_t NetNtpServerIP; /* NTP server IP address */
-int NetTimeOffset=0; /* offset time from UTC */
+/* NTP server IP address */
+IPaddr_t NetNtpServerIP;
+/* offset time from UTC */
+int NetTimeOffset=0;
#endif
#ifdef CONFIG_NETCONSOLE
@@ -187,13 +216,19 @@ int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
-volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
+/* Receive packet */
+volatile uchar *NetRxPackets[PKTBUFSRX];
-static rxhand_f *packetHandler; /* Current RX packet handler */
-static thand_f *timeHandler; /* Current timeout handler */
-static ulong timeStart; /* Time base value */
-static ulong timeDelta; /* Current timeout value */
-volatile uchar *NetTxPacket = 0; /* THE transmit packet */
+/* Current RX packet handler */
+static rxhand_f *packetHandler;
+/* Current timeout handler */
+static thand_f *timeHandler;
+/* Time base value */
+static ulong timeStart;
+/* Current timeout value */
+static ulong timeDelta;
+/* THE transmit packet */
+volatile uchar *NetTxPacket = 0;
static int net_check_prereq (proto_t protocol);
@@ -203,8 +238,10 @@ static int NetTryCount;
IPaddr_t NetArpWaitPacketIP;
IPaddr_t NetArpWaitReplyIP;
-uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */
-uchar *NetArpWaitTxPacket; /* THE transmit packet */
+/* MAC address of waiting packet's destination */
+uchar *NetArpWaitPacketMAC;
+/* THE transmit packet */
+uchar *NetArpWaitTxPacket;
int NetArpWaitTxPacketSize;
uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
ulong NetArpWaitTimerStart;
@@ -230,10 +267,13 @@ void ArpRequest (void)
arp->ar_pln = 4;
arp->ar_op = htons (ARPOP_REQUEST);
- memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */
- NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */
+ /* source ET addr */
+ memcpy (&arp->ar_data[0], NetOurEther, 6);
+ /* source IP addr */
+ NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP);
for (i = 10; i < 16; ++i) {
- arp->ar_data[i] = 0; /* dest ET addr = 0 */
+ /* dest ET addr = 0 */
+ arp->ar_data[i] = 0;
}
if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
@@ -449,7 +489,9 @@ restart:
}
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
+#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
+ defined(CONFIG_STATUS_LED) && \
+ defined(STATUS_LED_RED)
/*
* Echo the inverted link state to the fault LED.
*/
@@ -504,7 +546,8 @@ restart:
/*
* Echo the inverted link state to the fault LED.
*/
- if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) {
+ if(miiphy_link(eth_get_dev()->name,
+ CONFIG_SYS_FAULT_MII_ADDR)) {
status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
} else {
status_led_set (STATUS_LED_RED, STATUS_LED_ON);
@@ -655,7 +698,10 @@ NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
if (dest == 0xFFFFFFFF)
ether = NetBcastAddr;
- /* if MAC address was not discovered yet, save the packet and do an ARP request */
+ /*
+ * if MAC address was not discovered yet, save the packet and do
+ * an ARP request
+ */
if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
debug("sending ARP for %08lx\n", dest);
@@ -667,10 +713,12 @@ NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
NetSetIP (pkt, dest, dport, sport, len);
- memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
+ memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket +
+ (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
/* size of the waiting packet */
- NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
+ NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) +
+ IP_HDR_SIZE + len;
/* and do the ARP request */
NetArpWaitTry = 1;
@@ -714,9 +762,11 @@ int PingSend(void)
ip = (volatile IP_t *)pkt;
/*
- * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
+ * Construct an IP and ICMP header.
+ * (need to set no fragment bit - XXX)
*/
- ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
+ /* IP_HDR_SIZE / 4 (not including UDP) */
+ ip->ip_hl_v = 0x45;
ip->ip_tos = 0;
ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
ip->ip_id = htons(NetIPID++);
@@ -724,8 +774,10 @@ int PingSend(void)
ip->ip_ttl = 255;
ip->ip_p = 0x01; /* ICMP */
ip->ip_sum = 0;
- NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
- NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
+ /* already in network byte order */
+ NetCopyIP((void*)&ip->ip_src, &NetOurIP);
+ /* - "" - */
+ NetCopyIP((void*)&ip->ip_dst, &NetPingIP);
ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
s = &ip->udp_src; /* XXX ICMP starts here */
@@ -736,7 +788,8 @@ int PingSend(void)
s[1] = ~NetCksum((uchar *)s, 8/2);
/* size of the waiting packet */
- NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
+ NetArpWaitTxPacketSize =
+ (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
/* and do the ARP request */
NetArpWaitTry = 1;
@@ -798,7 +851,8 @@ static int CDPOK;
ushort CDPNativeVLAN;
ushort CDPApplianceVLAN;
-static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
+static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20,
+ 0x00 };
static ushort CDP_compute_csum(const uchar *buff, ushort len)
{
@@ -829,13 +883,15 @@ static ushort CDP_compute_csum(const uchar *buff, ushort len)
* CDP uses the IP checksum algorithm with a twist;
* for the last byte it *sign* extends and sums.
*/
- result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
+ result = (result & 0xffff0000) |
+ ((result + leftover) & 0x0000ffff);
}
while (result >> 16)
result = (result & 0xFFFF) + (result >> 16);
if (odd)
- result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
+ result = ((result >> 8) & 0xff) |
+ ((result & 0xff) << 8);
}
/* add up 16-bit and 17-bit words for 17+c bits */
@@ -888,7 +944,8 @@ int CDPSendTrigger(void)
*pkt++ = 180; /* TTL */
s = (volatile ushort *)pkt;
cp = s;
- *s++ = htons(0); /* checksum (0 for later calculation) */
+ /* checksum (0 for later calculation) */
+ *s++ = htons(0);
/* CDP fields */
#ifdef CONFIG_CDP_DEVICE_ID
@@ -960,7 +1017,8 @@ int CDPSendTrigger(void)
et->et_protlen = htons(len);
len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
- chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
+ chksum = CDP_compute_csum((uchar *)NetTxPacket + len,
+ (uchar *)s - (NetTxPacket + len));
if (chksum == 0)
chksum = 0xFFFF;
*cp = htons(chksum);
@@ -1018,7 +1076,10 @@ CDPHandler(const uchar * pkt, unsigned len)
if (pkt[0] < 0x02 || pkt[1] == 0)
return;
- /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
+ /*
+ * if version is greater than 0x02 maybe we'll have a problem;
+ * output a warning
+ */
if (pkt[0] != 0x02)
printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
pkt[0] & 0xff);
@@ -1074,10 +1135,12 @@ CDPHandler(const uchar * pkt, unsigned len)
ss = (const ushort *)(t + 1);
#ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
- if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
+ if (applid ==
+ CONFIG_CDP_APPLIANCE_VLAN_TYPE)
vlan = *ss;
#else
- vlan = ntohs(*ss); /* XXX will this work; dunno */
+ /* XXX will this work; dunno */
+ vlan = ntohs(*ss);
#endif
t += 3; tlen -= 3;
}
@@ -1440,7 +1503,8 @@ NetReceive(volatile uchar * inpkt, int len)
}
switch (ntohs(arp->ar_op)) {
- case ARPOP_REQUEST: /* reply with our IP address */
+ case ARPOP_REQUEST:
+ /* reply with our IP address */
debug("Got ARP REQUEST, return our IP\n");
pkt = (uchar *)et;
pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
@@ -1449,7 +1513,8 @@ NetReceive(volatile uchar * inpkt, int len)
NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
memcpy (&arp->ar_data[ 0], NetOurEther, 6);
NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
- (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
+ (void) eth_send((uchar *)et,
+ (pkt - (uchar *)et) + ARP_HDR_SIZE);
return;
case ARPOP_REPLY: /* arp reply */
@@ -1474,14 +1539,16 @@ NetReceive(volatile uchar * inpkt, int len)
if (tmp == NetArpWaitReplyIP) {
debug("Got it\n");
/* save address for later use */
- memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
+ memcpy(NetArpWaitPacketMAC,
+ &arp->ar_data[0], 6);
#ifdef CONFIG_NETCONSOLE
(*packetHandler)(0, 0, 0, 0, 0);
#endif
/* modify header, and transmit it */
memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
- (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
+ (void) eth_send(NetArpWaitTxPacket,
+ NetArpWaitTxPacketSize);
/* no arp request pending now */
NetArpWaitPacketIP = 0;
@@ -1491,7 +1558,8 @@ NetReceive(volatile uchar * inpkt, int len)
}
return;
default:
- debug("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
+ debug("Unexpected ARP opcode 0x%x\n",
+ ntohs(arp->ar_op));
return;
}
break;
@@ -1590,19 +1658,20 @@ NetReceive(volatile uchar * inpkt, int len)
case ICMP_REDIRECT:
if (icmph->code != ICMP_REDIR_HOST)
return;
- printf (" ICMP Host Redirect to %pI4 ", &icmph->un.gateway);
+ printf (" ICMP Host Redirect to %pI4 ",
+ &icmph->un.gateway);
return;
#if defined(CONFIG_CMD_PING)
case ICMP_ECHO_REPLY:
/*
- * IP header OK. Pass the packet to the current handler.
+ * IP header OK. Pass the packet to the
+ * current handler.
*/
/* XXX point to ip packet */
(*packetHandler)((uchar *)ip, 0, src_ip, 0, 0);
return;
case ICMP_ECHO_REQUEST:
- debug("Got ICMP ECHO REQUEST, "
- "return %d bytes\n",
+ debug("Got ICMP ECHO REQUEST, return %d bytes\n",
ETHER_HDR_SIZE + len);
memcpy (&et->et_dest[0], &et->et_src[0], 6);
@@ -1612,13 +1681,15 @@ NetReceive(volatile uchar * inpkt, int len)
ip->ip_off = 0;
NetCopyIP((void*)&ip->ip_dst, &ip->ip_src);
NetCopyIP((void*)&ip->ip_src, &NetOurIP);
- ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1);
+ ip->ip_sum = ~NetCksum((uchar *)ip,
+ IP_HDR_SIZE_NO_UDP >> 1);
icmph->type = ICMP_ECHO_REPLY;
icmph->checksum = 0;
icmph->checksum = ~NetCksum((uchar *)icmph,
- (len - IP_HDR_SIZE_NO_UDP) >> 1);
- (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len);
+ (len - IP_HDR_SIZE_NO_UDP) >> 1);
+ (void) eth_send((uchar *)et,
+ ETHER_HDR_SIZE + len);
return;
#endif
default:
@@ -1659,7 +1730,8 @@ NetReceive(volatile uchar * inpkt, int len)
xsum += sumdata;
}
while ((xsum >> 16) != 0) {
- xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
+ xsum = (xsum & 0x0000ffff) +
+ ((xsum >> 16) & 0x0000ffff);
}
if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
printf(" UDP wrong checksum %08lx %08x\n",
@@ -1809,7 +1881,8 @@ NetEthHdrSize(void)
if (myvlanid == (ushort)-1)
myvlanid = VLAN_NONE;
- return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
+ return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
+ VLAN_ETHER_HDR_SIZE;
}
int
@@ -1854,7 +1927,8 @@ NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
* Construct an IP and UDP header.
* (need to set no fragment bit - XXX)
*/
- ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
+ /* IP_HDR_SIZE / 4 (not including UDP) */
+ ip->ip_hl_v = 0x45;
ip->ip_tos = 0;
ip->ip_len = htons(IP_HDR_SIZE + len);
ip->ip_id = htons(NetIPID++);
@@ -1862,8 +1936,10 @@ NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
ip->ip_ttl = 255;
ip->ip_p = 17; /* UDP */
ip->ip_sum = 0;
- NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
- NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
+ /* already in network byte order */
+ NetCopyIP((void*)&ip->ip_src, &NetOurIP);
+ /* - "" - */
+ NetCopyIP((void*)&ip->ip_dst, &dest);
ip->udp_src = htons(sport);
ip->udp_dst = htons(dport);
ip->udp_len = htons(8 + len);
@@ -1884,7 +1960,9 @@ void copy_filename (char *dst, const char *src, int size)
*dst = '\0';
}
-#if defined(CONFIG_CMD_NFS) || defined(CONFIG_CMD_SNTP) || defined(CONFIG_CMD_DNS)
+#if defined(CONFIG_CMD_NFS) || \
+ defined(CONFIG_CMD_SNTP) || \
+ defined(CONFIG_CMD_DNS)
/*
* make port a little random (1024-17407)
* This keeps the math somewhat trivial to compute, and seems to work with
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